Valve gearing for internal-combustion engines



Jan. 18,1927. 1.614.709 F. s. BASTER VALVE GEARING FOR INTERNAL COMBUSTION ENGINES Filed 15b. 14,-. 1925 3 Sheets-Sheet 1 III 1 IN VEN TOR.

ATTORNEY.

Jan. 18, 1927. 1,614,709

, F. s. BASTER wmvs GEARING non mmnmu. colnws'rron aNeINBs iled Feb. 14 25 3 Shoots-Sheet 2 o IN VEN TOR.

A TTORNE Y.

' 1,614,709 .Jan. 18,1927. s. EASTER VALVE GEARING FOR INTERNAL coIBus'rIoN ENGINES Filed Feb. 14, 1925 3 Shoots-Shoot 5 I N VEN TOR.

A TTORNEY.

Patented Jan. 18, 1927.

UNITED STATES roans'r s. Bas'ma'. or DETROIT, MICHIGAN,

VALVE GEARING FOR INTERNAL-COMBUSTION ENGINES Application filed February 14, 1925. Serial No. 9,095.

My invention relates to valve gearing for internal combustion engines and objects of my improvements are to secure greater economy of fuel and greater volumetric efficiency in this type of engine.

I secure these objects in the way and by the means illustrated in the accompanying drawings and hereinafter described.

the exterior air preferably by an open and Figure 1 is a section through the portsand adjacent portions of an internal combustion engine, the section being taken on the lines II, (Figs. 2and 3), looking in the directions of the arrow. A v

Figure 2 is a section onthe line 11-11, Fig. 1;

Figure 3 is a section on the line IIIIII, Figure 1.

(1 indicates the cylinder generally. I) is the intake and c the exhaust valve. erably construct these valves as shown and described by me in an application pending concurrently herewith and having the Serial Number 7 46,936, in which the ports are open ed sharply after the valves leave their seats.

d is an auxiliary intake valve and e is an' auxiliary. exhaust valve. v c, (Fig. 3),"is the exhaust passage leading from the port of the valve o'to-and through the muffler c. The auxiliary intake valve (1 communicates by a passage (1 with the pas-- sage c. d is a valve by which the passage d may be closed or opened.

The port of the valve e communicates with unobstructed passage e.

The valves b and 0 are actuated by cams f, f on the cam shaft f in any proper way, and the "auxiliary valves d and e are actuated in any ordinary way. by a cam shaft 63 and cams dfle, on said cam shaft.

For convenience, I have shown an L-head cylinder. the intake and exhaust valves being actuated by the usual valve mechanism in this kind of construction, and I have shown the usual overhead valve mechanism for actuating the' auxiliary valves 11 and e, which for convenience are shown in the L'-compart ment of the cylinder. Conventional actuating mechanism, 6. d, d, d, e, e, e, is shown for the overhead valves.

I pref- The operation of the above described mechanism is'as follows 1 The charge being in the cylinder and compressed is ignited and expands on the workmg stroke.

The valve 0 is then opened, permitting the charge to escape under consider-. able pressure through the passage 0 and muflier c Toward the end of the exhaust stroke the main exhaust valve 0 closes and the auxiliary exhaust valve 6 opens. The.60 main inlet valve b then opens and the auxiliary exhaust valve 6 closes; then the main inlet valve Z) closes and the auxiliary inlet valve d opens, permitting the vacuum in the cylinder to be filled from the exhaust passage 0 in which the gases are still under some pressure in the passagesd 0 The auxiliary inlet valve d then closes and compression again takes place and the cycle is repeated.

What I claim'is:

1. In an internalcombustion engine, the combination of amain inlet valve, an exhaust valve and an auxiliary intake valve, the port of said'auxiliary intake valve communicating with the passage from the port of said exhaust valve and means for opening said auxiliary intake valve at the closing of the main intake'valve.v

2. In an internal combustion engine, the combination of a main inlet valve. an exhaust valve and an auxiliary intake valve opening to an exhaust passage with a mufiler therein, the portof said intake valve communicating with the passage from the port of said exhaust valve between said'exhaust valve and the mufiler and means for opening said auxiliary intake valve at the closing of the main intake valve.

3. In an internal combustion engine, the combination of a main inlet valve. an exhaust valve and an auxiliary intake valve, the port of said auxiliary intake valve communicating with the passage from the port of said exhaust valve, means for opening said auxiliary intake valve at the closing of the main intake valve. and a throttle valve in the passage communicating with said auxiliary intake valve and the exhaust passage.

4. In an internal combustion engine, the

combination of a main inlet valve, an exhaust Valve opening to an exhaust passage with a mufiler therein and an auxiliary intake valve, the port of said intake valve communicating with the passage from the port of said exhaust valve between said exhaust valve and the mufller, means for opening in the passage communicating with said aux- 10 iliary intake valve and the exhaust passage.

In testimon cation.

y where0f, I sign this spec fi- FOREST s. EASTER. 

